Demountable wheel.



L. BAUMGARTL & H. F, GASTON. DEMOUNTABLE WHEEL.

. I APPLICATION FILED FEB. 6 '91]- 1,298,279 Patented Mar. 25,1919.

3 SHE[TSSHEET I.

L. BAUMGARTL & H. F. GASTON. DEMOUNTABLE WHEEL. APPLICATION FILED FEB. 6, I91]- Patented Mai. 25,1919.

3 SHEETS-SHEET 2.

5 4i, 3 7 w a 2 7. w

O 6 O o 0 .42 m 4 0 Z 4 I @lK/Il. ax m 0, O O

@0672 $7 erqyja L. BAUMGARTL & H, F. GASTON.

DEMOUNTABLE WHEEL' APPLICATION FILED FEB. 6. IQII.

Patented Mar. 25, 1919.

3 SHEETSSHEET 3.

LEROY BAUMGARTL AND HENRY F. GASTON, OF CHICAGO, ILLINOIS; SAID GASTQN 'ASSIGNGR T0 SAID BAUMG-ARTL.

DEMOUNTABLE WHEEL.

Specification of Letters Patent. Pat-,gufi gd Mar, 25, 1919,

Application filed February 6, 1917. semi No. recess.

To all whomc't may concern:

Be it known that we, LEROY BAUMeAn'iL and HENRY F. GASTON, citizens of the United States, residing at Chicago, in, the county of Cook and State of Illinois, have invented a new and useful I-m rovement in Demountable Wheels, of w ich the following is a "specification.

ably holding the outer hub-member in such relation to the inner hub-member that these two members will operate as a. unit.

@ur primary ob ects are to provide improvements in wheels of the character above referred to,'to the end that the operation of assembling the outer hub-member and the partscarried thereby, with the inner huhmember, and the disassembling of these parts, may be effected easily and quickly, the outer hub-member being positively held to the innerhub-member when in assembled relation, regardless of slight variations in the proportions of the parts, whether resulting in the manufacture of the wheel or by wear of parts, and under the stresses to which the wheel'is subjected in actual and continued use; and to the end that the outer hubmember shall be held against baclclashing.

Referring to the accompanying drawings:

Figure 1 is a view in longitudinal sectional elevation of a wheel structure constructed in accordance with our invention, the section being taken at the line 1 on Figs. 2 and 4 and viewed in the direction of the arrows.

. Fig. 2 is a sectional view taken at the line 2 on Fig. 1 and viewed in the direction of the arrow, certain of the parts being shown in elevation.

Fig. 3 is a section taken at the line 3. on Fig. 1 and viewed in the direction of the arrow.

Fig. i is a section taken at the line 4 on Fig. 1 and viewed in the direction of the arrow.

Fig. 5 is a view 'in elevation of one of the plurality of plunger devices employed; and

Fig. 6, a si-milad view of the lunger dcvice shown in Fig. 5, this view sing taken from the left hand side of Fig. 5.

We have chosen to illustrate our invention as applied to a wheel structure journaled on an axle as in the case of the front wheel of an automobile though it will he 1 readily understood from the following that the invention is not limited to a wheel of this character, but is equally applicable to a drive-wheel. I A

One of the front steering axles of an au tomob'ile is represented at 7, this axle carrying ball-races 8 and'ii, between which are imposed the races 10 and 11 carried by the inner hub-member 12, balls 13 and 14: being interposed between the opposed races 8' and 10 and 9 and 11 and forming a. ball bearing upon which the hub-member 12 is supported on the axle 7 to rotate thereon, the hubmember 12 being hollow and preferably having its outer end tapered, as indicated at 15. The outer hub-member of the wheel is represented at 16, this hub being connected with the rim, or felly, (not shown) through the medium of the spokes 17. The outer hub-member 16, spokes 17, and felly would thus be connected together. and the whole is adapted to he bodily removed from and assembled with, the inner hub-member 12, as desired, the outer hub-member 16 likewise being hollow and of such internal form that it will snugly fit over the inner hub-merit her 12.

The inner hub-member 12, is open at its outer end, (the righthund end in Fig. 1) and the metal forming this end of the hub is slit-ted longitudinally thereof, as at the three places indicated at 1 8 in Fig. 3, for a purpose hereinafter described, the angle at which the outer tapered surface of'this part of the member '12 extends relative to the median line of the hub being slightly less than the angle of the main tapered portion of the hub. The hub-member 12 contains in its periphery, a plurality. of radially-disposed epenings, or eockets, 19, shown as three in num er, though. the number thereof may be varied as desired, these openings, or sockets, by preference. being offrusto-conical form with their walls flaring radially outward, and according to the particular cbnstru'ction illustrated being formed partly in inset bosses QO-arranged about the inner circumferential surface of the member 12,

'forcooperat on with devices carried by the outerQhuh-member 16 and adapted'to be prointo these sockets for releasably lock- QQ ,ing' theIouter-hub-member to the'inner hub- 1 member. The locking devices accordln to he illustrated preferred embodimentflot my 1 23 extending latera .y from a ring 24 surroundin the inner hub-member 12 and pref- -the' particular arrangement shown jQ LjfitS fl'atWiSe against the inner surface of .a radially-disposed annular flange 25 pro- "vided on'the bodypoition of the outer hub- =me ber'-,16,ja'n d is rigidly secured' thereto,

be. con'centric with this body portion 'by ."Jmeansof rivets 26- .andscrew bolts '27,. the headsofwhieh latter are represented at 28'.

struetion illustrated, by' barsv fitting at teninto "radially-disposed slots 3 125 of'theouter hub-member 16., v v In' the particular construction illustrated 1 jlwardly in ,a

"shown of the leaf y 35 secured'to' the inner face of the flang 25, 40 {the'out'eri free, ends of these springs, two of :whic h cooperate, with each p1unger'21 being-;"1 foverlapped'as indicated inyFig. 4 and bear- 'ting flatwise against the outer ends" of the f plungers21. The portions 29 of the plum 4 for withdrawing these plungers from ft sockets 19; these can'1-devices,-in the construc-" tion' illustrated, being indicated at 36 and a of a-number' corresponding to the numberf" either direction, as through the a handle 39 thereon. The portions 29 of the plungers 21 extendtransversely of the respeotive canrdevices 3 6"and into the path off movementof vthefllatter,

movement of thering 37 in 'onedirection the plungers 21 are moved radially outward and in the movement of mvention fcqniprise plungers 21 reciprocab le in radially-extendin openings 22 in bosses;

erebly e osely fitting the latter and provided rt'of the outer hub-member 16,this V arts to" 3 formthi's-outer hub-member, as fol ows In I the ring t of th'e'path of radial movement of the plun'o- "gers 21 in which position of 'thering, the inner, ends oftheselplungers extend into the. Y interior of the out-er "hub-member 16. The outer-f hub-member is i-then 'I-,.'. telescoped with I 5 Theplungers :21 are provided withjlaterallyi -the inner hub-membertoa position in {which Q ,eXtending-fingers'29 formed, in the con i i istujthe resi'stan f h e s-1 as $9. asth i lteh ub m m b i adjus d-nn-ihsinnehub: the p1ungers21Earenormally projected indirection to cause them to enter 'jfihe' sockets '19 by; the action of springs-"34', Y {These springs when th .aire'each 'vheldat one end by means ofcli'psW tractible;'endjo portionsff rini'ng'the outerjend of the me gerscooperate with a series of cam-device s:

:hers as stated fthfe spartan rotates the" ring .37 inanti cloclr they I overlie the jr'espective portions 29 of v a the plunger's 21; in 1 which movement th'e'surv. surfaces of th e' portions 2'9'a '1d thereby. force jthej plvungers '21 into tight-enga latter forming journal support forlthis ring, and permitting the-latter to, be rotated' in medium or sufficiently 'to produce undue wearandalso whereby" in'the' prevent-them from-being forced outof t-lic' of; our *invei ition w ,Inittedto move radially inward under the 1 these -=openings or s0ckets,;19 being provided action of the springs 34, .The lower portions resented at 40, extend adjacent to spurs 41 I provided on the ring 37 and havingdefiectmg surfaces 42 for a purpose hereinafter described. p v

The :plungers 21 the inner-ends of which" are of tapered form to conform generally to thecontmir. of the sockets '19, are longitu dinally split, preferably centrally, as represented at 43 to render their inner ends contractible in order; that they Willsnugly-fit ,th'esockets 19 into which they extend under Y their inherent spring tension 1 ,80 I The outer hub-member lfi may be assembled with 'thelinnei hub-1ne-1nben12 in the followin manner. The ringB'Z is rotated to a PQSltltHlhln WlliCh the'spurs 41 are out the plungers 21' enterlzthfe; sockets :19','thes,e I

v plunger s"in the operatiQnjjust' stated" by]: jilargediportions 30* thereof into slots '31 in 'fthel'outeriends. of I the 'plungers and held i, therein by; pins '32, the membersj29' extending 3 in the flange engaging ,fth'e outer pei iphjei @Q edp0s v ..-sp i.ngs-- 3 mm diate i pr j rtheml ime."

m mber to.

position iir which t1 with thesef ,k turevareff 1 I i y f "uh-menihe the inner) hub'memb willbe'forced ement-ltlierew t ft e... *hu m m ntorel t relyiwn raced ditivn in e r w b 'efl su f the; mherenti-sp mg t nsi n fi .t

ber 12 to? efinalygrip ed;togetheii -cUpon assembling i thefilnlielf and" outer hubm'em wise diiiection in'-Fig; 2;whiel carries the spurs 4.1.- into a position' in 'which faces ofthe spurs ride against thejouter v, 'enlhh withv h SQ k S 19, the inner ends of these plum 37, 216 stated. In this p osition "of the parts E socketslt) by the centrifugal tm'ce"de.veloped" by the rapid 'i'otation of the wheel; this ring in the B5 opposite dlrcctlon these plungers-are.per-

According to the-preferred embodiment I re ro'vide a dust-cap48 130 gers contracting in' 't'he-move'inent of the ring which screws into the outer end of the hub- In'ernber 16, this cap having a portion 49 which operates, when the cap is screwed into place, to exert pressure against the slotted outer end of the hub-member 12 tending to outer hub-member upon the inner hub-memher, and by providing the plungers with contractible sections which are caused to contract upon forcing the plungersinto the cooperating sockets 19 in the inner hub-member, the parts of the structure may not only be caused to closely fit and be interlocked with each other against'relative movement when the parts are originally assembled, but also should the parts become worn in use. Under the .conditions last stated if no provision were made for taking up wear, sufficient relative movement of the parts would occur to produce back-lashing, and it back lashing once starts the wheel would become comparatively quickly permanently impaired for continued practical use. By my construction, lIOWBVGIQ HS stated above, it is pos sible to take up the wear and thus avoid back-lashing.

Any. suitable means for holding the ring 37 in the position to which it is rotated in the operation of forcing the plungers 21 into the sockets 19, may be provided. ivhose shown comprise a set-screw 44- which extends through an opening in a cap-member 45 surround mg the outer hub-member 16 as shown,

the positions illustrated in the drawings, the

operator grasps the handle 39 and rotates the ring 37 in clockwise direction in Fig. 2, this movement of the ring causing the cams 36 to move against the undersurfaces of the portions 29 of the plungers and withdraw the latter from the sockets 19 in opposition to the action of the springs 34, the outer ends of the cams 36 being preferably provided with portions 47 which are substantially concentric with the axis about which the ring 37 rotates, with which the plungers engage in the final movement of the ring and which operate to cause the ring to remain in the position to which it was rotated to withdraw variations in proportions of and secured to the ring 37, this set-screw havlng threaded the plungers, as stated, until ,roiated in the opposite direction by hand. From the fore going it will be noted that all of the plungcrs 21 are withdrawn from the sockets 19- by the simple operation of rotating the ring 37 and that, with these plungers withdrawn to this position, the operator may readily draw the outer hub-member 15 from the inner hub-member 12.

From the foregoing description, it willbe readily understood that a wheel constflsycted entire wheel structure besides producing objectionable noise.

While we have illustrated and described a particular construction in which our-invention may be embodied, we do not wish to be understood as intending to limit it thereto,

. as the same may be variously modified and altered without departing from the spirit of our invention, it being our intention to claim our invention as fully and completely as the prior state of the art will permit.

What we claim as new and desire to secure by Letters Patent is 1. In a structure of the character set forth, the combination of an inner hub-member and an outer hub-member, one of which contains a socket and the other a plunger adapted to be moved into and out of said socket, and means for insuring a tight fit between said plunger and socket regardless of slight the interfitting parts of the structure.

2. In a structure of the character set forth, the combination of an inner hub-member containing a socket, an outer hub-member, a plunger carried by and movable on said outer hub-member into and out of said socket, and means "for insuring a tight fit between said plunger and socket regardless of sli ht variations in proportions of the interfittmg parts of the structure.

3. In a structure of the character set forth, the combination of an inner hub-member'and an outer hub-member one of which contains a socket and the other a plunger adapted to be moved into and out of said socket,-th'e wall of said socket and said plunger'being relatively yieldingly movable in a plane transversely of the median line of said plunger to insure a tight fit of said plunger with said socket, for the purpose set forth.

4. In a structure of the character set forth, the combination of an inner hub-member and an outer hub-member one of which contains a socket, and a plunger on the other of said hub-members adapted to be moved into and f-"the latter. cntractib1eat lwhichYpo'rtion it 'ext'ends into eaidsocket; andmeansfor' fore-f j 1 ,ingsaid vplunger into said socket against the l inherentspring tensionof the split section of 7. lnfa structuregof" the. .characterset] .i'fo'rth lthe combination -;:of an. inner hub-I c "member I having its outer iglid pf tapered form; said hub-member containing a socket; -.:an outerhub-i neinber telescopingthe ta aid inner' hub membe'fl; Qthe Jatter being; longitudinally slitted' at its tapered portio11,- and contractible upon as; 1 l sembling together :said hub members, and .a-plunge'r carried by said outer: hub -j me1n'- u .."ber andadapted to bemoved int'o a'nd out'of I )said" socket, the inner endof said'plunger ;being ;longitudinally' slitted for the pur @I'po'se 'setlfo'rth'n 1 4'0 fso" p red :portionfof s a socket, and a plunger on the other of said hub-members adapted to be moved intoand' versely contractible to insure a.tight fitiof said lungerwith said socket; 1 J 5. n a structure of the character set forth," -Y-the combination of an inner hub-member an'dff I e lplunger {ageinst the. action of the spring "Z0.

'- when the-plunger is'in a position wherein it an outer hub-member one of which contains out of said socket, said plunger having a longitudinally 'slitted portion-whereby it is,

rendered contractible, when introduced into. said socket, "to insure alight'tfit of said--;

iplunger with said socket, for the purposes 1 set forth.

. 6; Inafstruc ture iof the character, forth the combination of said. plunger;

8.11 'a 1 structure of thecharacter LSGiJ a forth, the combination 1 of an {inner hub-'1 memberghaving its outer end of. tapered form; said hub mer'nber containing a. socket,

' fthe' w'all of which flares outw ardly,fan outer hub-member telescoping the tapered por-u Qtion of said inner.'hhie-member,,theylatixar i being, longitudinally slitt'ed at its" tapered portion and contratible-upOn assembling 'f together said hub-members,

carried by said outer hub 'ing *longitudinallv slitted for the purpose I w bentelescoping Withf said-inner hub-mem her, a plunger] on "said outer hub-member set forth,

' 9. In a structure of ther -"character" 'f oI"-th, the-combination ofan inner hub-inein *ber, an outer hu-b-membei'g one of saldmems Lai- 'bers 'containinga socket and thef other a plungeradapted to be moved intdand out v ofsaid socket, and constructed and arranged to require it to be forced into position in;

' rsaid socket, a spring tending to force said means for moving;said plunger outwardly against'the resistance of v plunger inwardly,

said spring, and means adapted to engage an mnerh brmemberan an outer. hub-member, one of which contains a socket,'aplunger. on the other ofsaidhnbi members and'edapted tobe moi'dinto;andout of said socket, said plunger being formed with a longitudiniillvlsplit section renderingbenconteiningfa; socks tiitably. ,inounted;

pr form, the combination; of anin e hub mam and a plunger member *and, adapted to be moved into and out of. said] "si'mketg 'thefinne end of said plunged-be f f-socket; v v

: 13 In- ,a struture,of; the character set forth, the combination ofan inner hub-mem the plunge; for mmerses it. to'positioir in said socket, said. last-1marn'ed Inieansibeing "so constructed and arranged-es not :to yprevent the :radial movement outwardly of the extends inwardly; beyond the inner ,periphcry of the outer hub-member. i

" a u t r For; th e meegei ber telescoping 'with said innerfhub-rnem; -.be'r',,e piungeron said outer hubsmeinber; and adapted to enter said socket, a spring tendingto, force said plungerginto; said, "socket, said-plunger being so, constructed and arranged asto require it to be forced. into position infsjaid ;seck e t,f;a rotatably-u v t mounted member. carrying. a cam" adaptedflz l 'to cengagefsaidfplungerand withdraw the latter. from saidisocket against the action of said -spri ig- -,When said rotatable member-his rotatediinione direction,' andja surface on; said rotatabldmember located adjacent the v lowet'endof saidcarn-and ar anged to force 0 said p lu'ngei' into said socket "and obstruct put-ward ni'overlnent of said plungerl 1 311 In jastructure: of thefcharacter set orth, the

combination oi an inner hub znemg anloute17-hub member l telescopifi'g'with said 1 in ehub member, a plunger, on :1 said enemas-me b r and 5* adaptedto enter aid'.socket,.jand' having a; flaterall extension, a rotatlable memberpro J jiided with a* cem fsursface engaging -t'ension for-actuatingsaidplunger, and a se -I ,ries {of -studsl f said exand on which: Isa

12-; Intstructure ofthef 61 F51 terijsietl1oe her 1 conta'ini nge socket, an outer hub-mem ibertelescopmgWithsmdiniierhub member, 1

a plunger on- "said goute hub-member and adapted to enter said Socket; :1 flange (in-said lie .outer hubwmemben' anfd a-leaf fspring'l secured te -said flange to extend 'cireumferentially of f t-he hubmiexnber and beefing" against said plunger and tendingto' ."forceiit'into said I ber containing. '2. socketg an outer hub-mema leaf, sprln H lungs endgteiiding' 'to force it into sald'rsockehan arotatablysubporv 14. In a structure of the character set extension on said plunger extending, and raforth, the combination of an inner hub-memdi ally movable, in said slot, and a camber containing a socket, an outer hub-memequipped member rotatably mounmd on said 10 her telescoping Withsaid inner hub-memouter hub-member and engaging said ex- -5 her, a plunger on said outer hub-member tension for actuating said plunger.

and adapted to enter said socket, a flange on LEROY BAUMGARTL. said outer hub-member containing a slot, an i HENRY F. GASTON. 

